Hi
the two wooden pegs are cut down and pushed into the grooves either side of main cap This stops the gasket from collapsing at this area
the engine does not have a rear seal the oil is slung back into rear of engine by a screw on the crankshaft
when fitting all cork seals front and rear I Used rtv and clamps and stuck them to main cap and front plate and sanded the to get as best fit I could
will see if I can find photos
hope this helps
richard